Extraodinary issue dedicated to the SIEU 2023 International Workshop held in person and online at the Industrial Campus (Ferrol, A Coruña, Spain) of the Universidade da Coruña on MARCH 16-17, 2023. This workshop was sponsored by the Ministry of Science and Innovation (MCI) of the Spanish Government, Project RTI2018-093498-B-I00: (GEN)ESIS AND (RED)EFINITION OF THE CONCEPTUAL MATRIX OF THE (U)TILITARIAN (P)ARADIGM OF (R)ATIONALITY. This workshop collected the updated scientific production of the Spanish and Ibero-American teams of utilitarian studies for the period 2021-2023.